I have fixed stabilizer bar at my iswara last time, had many bad experiences of that. 1st, u will feel more heavy when u turn your steeering, i mean its wont be light anymore, will be harder, 2nd, long run, ur absorber will have problem, either one will have short life span or both, then tyres life span also will be short, drass up will have problem. All this will be seen as soon as u fixed stabilizer, and remember, fixing stabilizer may void your warranty. check with Proton before proceed. Out of disadvantage, the advantage is, your car more stable at corner... nothing much than.....